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Incipient plasticity in metallic glass modulated nanolaminates
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) True stress-strain curve of nanocrystalline-amorphous nanolaminates. The thicknesses of crystalline copper and amorphous are 35 and , respectively. The inset is the cross-sectional transmission electron micrograph of the nanolaminate. The observed tensile behavior is reproducible on the samples prepared at different time periods (also see Ref. 1).

Image of FIG. 2.
FIG. 2.

(Color online) Progressive stress-relaxation plots of (a) nanocrystalline-amorphous nanolaminates and (b) crystalline-crystalline copper-stainless steel nanolaminates. The bilayer period for the latter is . The upper left corner inset in (a) is a complete stress-relaxation plot for the nanolaminate.

Image of FIG. 3.
FIG. 3.

(Color online) Load-unload multistep stress-relaxation plot shows the reproducible observations of stress decay in nanocrystalline-amorphous nanolaminates at low stress levels.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Apparent activation volume and the strain rate sensitivity of nanocrystalline-amorphous nanolaminates at various stress levels. (b) Apparent activation volume vs. stress plotted on a logarithmic scale. The data shown in the figures are obtained from two different stress-relaxation runs on the samples prepared independently at different time periods.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Incipient plasticity in metallic glass modulated nanolaminates